发明名称 Extruding inner liners for vehicle tyres
摘要 <p>In one working operation or in directly successive working operations a tube 2 is extruded having at least two layers of different materials and the wall thickness thereof is structured to be wave-shaped or undulatory, i.e. has thick portions and thin portions at intervals. The thus formed tube sections are then cut from the tube to form the individual inner liners 50. The periodic variation in wall thickness is obtained either by altering the infeed of at least one material, or by constricting the flow passage through the extrusion head, or by changing the withdrawal speed of the tube. The materials are preferably two different rubbers. <IMAGE></p>
申请公布号 GB2050933(A) 申请公布日期 1981.01.14
申请号 GB19800017433 申请日期 1980.05.28
申请人 SCHIESSER AG 发明人
分类号 B29D30/08;B29B7/00;B29C47/00;B29C47/06;B29C47/20;B29C47/22;B29C47/26;B29C47/56;B29C47/92;B29C67/00;B29D23/24;B29D30/00;B29D30/06;(IPC1-7):29F3/10;29H17/02 主分类号 B29D30/08
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